From b3587102d160fb74a12935a79f06ee8a12712f12 Mon Sep 17 00:00:00 2001 From: ReinUsesLisp Date: Tue, 29 Dec 2020 21:16:57 -0300 Subject: [PATCH] core/memory: Read and write page table atomically Squash attributes into the pointer's integer, making them an uintptr_t pair containing 2 bits at the bottom and then the pointer. These bits are currently unused thanks to alignment requirements. Configure Dynarmic to mask out these bits on pointer reads. While we are at it, remove some unused attributes carried over from Citra. Read/Write and other hot functions use a two step unpacking process that is less readable to stop MSVC from emitting an extra AND instruction in the hot path: mov rdi,rcx shr rdx,0Ch mov r8,qword ptr [rax+8] mov rax,qword ptr [r8+rdx*8] mov rdx,rax -and al,3 and rdx,0FFFFFFFFFFFFFFFCh je Core::Memory::Memory::Impl::Read mov rax,qword ptr [vaddr] movzx eax,byte ptr [rdx+rax] --- src/common/page_table.cpp | 10 +- src/common/page_table.h | 68 ++++++-- src/common/virtual_buffer.h | 10 +- src/core/arm/dynarmic/arm_dynarmic_32.cpp | 1 + src/core/arm/dynarmic/arm_dynarmic_64.cpp | 1 + src/core/hle/kernel/memory/page_table.cpp | 2 +- src/core/memory.cpp | 187 ++++++++-------------- 7 files changed, 132 insertions(+), 147 deletions(-) diff --git a/src/common/page_table.cpp b/src/common/page_table.cpp index bccea0894..8fd8620fd 100644 --- a/src/common/page_table.cpp +++ b/src/common/page_table.cpp @@ -10,16 +10,10 @@ PageTable::PageTable() = default; PageTable::~PageTable() noexcept = default; -void PageTable::Resize(std::size_t address_space_width_in_bits, std::size_t page_size_in_bits, - bool has_attribute) { - const std::size_t num_page_table_entries{1ULL - << (address_space_width_in_bits - page_size_in_bits)}; +void PageTable::Resize(size_t address_space_width_in_bits, size_t page_size_in_bits) { + const size_t num_page_table_entries{1ULL << (address_space_width_in_bits - page_size_in_bits)}; pointers.resize(num_page_table_entries); backing_addr.resize(num_page_table_entries); - - if (has_attribute) { - attributes.resize(num_page_table_entries); - } } } // namespace Common diff --git a/src/common/page_table.h b/src/common/page_table.h index 9754fabf9..8d4ee9249 100644 --- a/src/common/page_table.h +++ b/src/common/page_table.h @@ -4,6 +4,7 @@ #pragma once +#include #include #include "common/common_types.h" @@ -20,10 +21,6 @@ enum class PageType : u8 { /// Page is mapped to regular memory, but also needs to check for rasterizer cache flushing and /// invalidation RasterizerCachedMemory, - /// Page is mapped to a I/O region. Writing and reading to this page is handled by functions. - Special, - /// Page is allocated for use. - Allocated, }; struct SpecialRegion { @@ -48,6 +45,59 @@ struct SpecialRegion { * mimics the way a real CPU page table works. */ struct PageTable { + /// Number of bits reserved for attribute tagging. + /// This can be at most the guaranteed alignment of the pointers in the page table. + static constexpr int ATTRIBUTE_BITS = 2; + + /** + * Pair of host pointer and page type attribute. + * This uses the lower bits of a given pointer to store the attribute tag. + * Writing and reading the pointer attribute pair is guaranteed to be atomic for the same method + * call. In other words, they are guaranteed to be synchronized at all times. + */ + class PageInfo { + public: + /// Returns the page pointer + [[nodiscard]] u8* Pointer() const noexcept { + return ExtractPointer(raw.load(std::memory_order_relaxed)); + } + + /// Returns the page type attribute + [[nodiscard]] PageType Type() const noexcept { + return ExtractType(raw.load(std::memory_order_relaxed)); + } + + /// Returns the page pointer and attribute pair, extracted from the same atomic read + [[nodiscard]] std::pair PointerType() const noexcept { + const uintptr_t non_atomic_raw = raw.load(std::memory_order_relaxed); + return {ExtractPointer(non_atomic_raw), ExtractType(non_atomic_raw)}; + } + + /// Returns the raw representation of the page information. + /// Use ExtractPointer and ExtractType to unpack the value. + [[nodiscard]] uintptr_t Raw() const noexcept { + return raw.load(std::memory_order_relaxed); + } + + /// Write a page pointer and type pair atomically + void Store(u8* pointer, PageType type) noexcept { + raw.store(reinterpret_cast(pointer) | static_cast(type)); + } + + /// Unpack a pointer from a page info raw representation + [[nodiscard]] static u8* ExtractPointer(uintptr_t raw) noexcept { + return reinterpret_cast(raw & (~uintptr_t{0} << ATTRIBUTE_BITS)); + } + + /// Unpack a page type from a page info raw representation + [[nodiscard]] static PageType ExtractType(uintptr_t raw) noexcept { + return static_cast(raw & ((uintptr_t{1} << ATTRIBUTE_BITS) - 1)); + } + + private: + std::atomic raw; + }; + PageTable(); ~PageTable() noexcept; @@ -63,20 +113,16 @@ struct PageTable { * * @param address_space_width_in_bits The address size width in bits. * @param page_size_in_bits The page size in bits. - * @param has_attribute Whether or not this page has any backing attributes. */ - void Resize(std::size_t address_space_width_in_bits, std::size_t page_size_in_bits, - bool has_attribute); + void Resize(size_t address_space_width_in_bits, size_t page_size_in_bits); /** * Vector of memory pointers backing each page. An entry can only be non-null if the - * corresponding entry in the `attributes` vector is of type `Memory`. + * corresponding attribute element is of type `Memory`. */ - VirtualBuffer pointers; + VirtualBuffer pointers; VirtualBuffer backing_addr; - - VirtualBuffer attributes; }; } // namespace Common diff --git a/src/common/virtual_buffer.h b/src/common/virtual_buffer.h index 91d430036..fb1a6f81f 100644 --- a/src/common/virtual_buffer.h +++ b/src/common/virtual_buffer.h @@ -15,10 +15,12 @@ void FreeMemoryPages(void* base, std::size_t size) noexcept; template class VirtualBuffer final { public: - static_assert( - std::is_trivially_constructible_v, - "T must be trivially constructible, as non-trivial constructors will not be executed " - "with the current allocator"); + // TODO: Uncomment this and change Common::PageTable::PageInfo to be trivially constructible + // using std::atomic_ref once libc++ has support for it + // static_assert( + // std::is_trivially_constructible_v, + // "T must be trivially constructible, as non-trivial constructors will not be executed " + // "with the current allocator"); constexpr VirtualBuffer() = default; explicit VirtualBuffer(std::size_t count) : alloc_size{count * sizeof(T)} { diff --git a/src/core/arm/dynarmic/arm_dynarmic_32.cpp b/src/core/arm/dynarmic/arm_dynarmic_32.cpp index e9c74b1a6..8aaf11eee 100644 --- a/src/core/arm/dynarmic/arm_dynarmic_32.cpp +++ b/src/core/arm/dynarmic/arm_dynarmic_32.cpp @@ -133,6 +133,7 @@ std::shared_ptr ARM_Dynarmic_32::MakeJit(Common::PageTable& config.page_table = reinterpret_cast*>( page_table.pointers.data()); config.absolute_offset_page_table = true; + config.page_table_pointer_mask_bits = Common::PageTable::ATTRIBUTE_BITS; config.detect_misaligned_access_via_page_table = 16 | 32 | 64 | 128; config.only_detect_misalignment_via_page_table_on_page_boundary = true; diff --git a/src/core/arm/dynarmic/arm_dynarmic_64.cpp b/src/core/arm/dynarmic/arm_dynarmic_64.cpp index 7a4eb88a2..d2e1dc724 100644 --- a/src/core/arm/dynarmic/arm_dynarmic_64.cpp +++ b/src/core/arm/dynarmic/arm_dynarmic_64.cpp @@ -152,6 +152,7 @@ std::shared_ptr ARM_Dynarmic_64::MakeJit(Common::PageTable& // Memory config.page_table = reinterpret_cast(page_table.pointers.data()); config.page_table_address_space_bits = address_space_bits; + config.page_table_pointer_mask_bits = Common::PageTable::ATTRIBUTE_BITS; config.silently_mirror_page_table = false; config.absolute_offset_page_table = true; config.detect_misaligned_access_via_page_table = 16 | 32 | 64 | 128; diff --git a/src/core/hle/kernel/memory/page_table.cpp b/src/core/hle/kernel/memory/page_table.cpp index f53a7be82..f3e8bc333 100644 --- a/src/core/hle/kernel/memory/page_table.cpp +++ b/src/core/hle/kernel/memory/page_table.cpp @@ -265,7 +265,7 @@ ResultCode PageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_t physical_memory_usage = 0; memory_pool = pool; - page_table_impl.Resize(address_space_width, PageBits, true); + page_table_impl.Resize(address_space_width, PageBits); return InitializeMemoryLayout(start, end); } diff --git a/src/core/memory.cpp b/src/core/memory.cpp index 54a848936..f209c4949 100644 --- a/src/core/memory.cpp +++ b/src/core/memory.cpp @@ -4,7 +4,6 @@ #include #include -#include #include #include @@ -68,21 +67,8 @@ struct Memory::Impl { bool IsValidVirtualAddress(const Kernel::Process& process, const VAddr vaddr) const { const auto& page_table = process.PageTable().PageTableImpl(); - - const u8* const page_pointer = page_table.pointers[vaddr >> PAGE_BITS]; - if (page_pointer != nullptr) { - return true; - } - - if (page_table.attributes[vaddr >> PAGE_BITS] == Common::PageType::RasterizerCachedMemory) { - return true; - } - - if (page_table.attributes[vaddr >> PAGE_BITS] != Common::PageType::Special) { - return false; - } - - return false; + const auto [pointer, type] = page_table.pointers[vaddr >> PAGE_BITS].PointerType(); + return pointer != nullptr || type == Common::PageType::RasterizerCachedMemory; } bool IsValidVirtualAddress(VAddr vaddr) const { @@ -100,17 +86,15 @@ struct Memory::Impl { } u8* GetPointer(const VAddr vaddr) const { - u8* const page_pointer{current_page_table->pointers[vaddr >> PAGE_BITS]}; - if (page_pointer) { - return page_pointer + vaddr; + const uintptr_t raw_pointer = current_page_table->pointers[vaddr >> PAGE_BITS].Raw(); + if (u8* const pointer = Common::PageTable::PageInfo::ExtractPointer(raw_pointer)) { + return pointer + vaddr; } - - if (current_page_table->attributes[vaddr >> PAGE_BITS] == - Common::PageType::RasterizerCachedMemory) { + const auto type = Common::PageTable::PageInfo::ExtractType(raw_pointer); + if (type == Common::PageType::RasterizerCachedMemory) { return GetPointerFromRasterizerCachedMemory(vaddr); } - - return {}; + return nullptr; } u8 Read8(const VAddr addr) { @@ -222,7 +206,8 @@ struct Memory::Impl { std::min(static_cast(PAGE_SIZE) - page_offset, remaining_size); const auto current_vaddr = static_cast((page_index << PAGE_BITS) + page_offset); - switch (page_table.attributes[page_index]) { + const auto [pointer, type] = page_table.pointers[page_index].PointerType(); + switch (type) { case Common::PageType::Unmapped: { LOG_ERROR(HW_Memory, "Unmapped ReadBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})", @@ -231,10 +216,8 @@ struct Memory::Impl { break; } case Common::PageType::Memory: { - DEBUG_ASSERT(page_table.pointers[page_index]); - - const u8* const src_ptr = - page_table.pointers[page_index] + page_offset + (page_index << PAGE_BITS); + DEBUG_ASSERT(pointer); + const u8* const src_ptr = pointer + page_offset + (page_index << PAGE_BITS); std::memcpy(dest_buffer, src_ptr, copy_amount); break; } @@ -268,7 +251,8 @@ struct Memory::Impl { std::min(static_cast(PAGE_SIZE) - page_offset, remaining_size); const auto current_vaddr = static_cast((page_index << PAGE_BITS) + page_offset); - switch (page_table.attributes[page_index]) { + const auto [pointer, type] = page_table.pointers[page_index].PointerType(); + switch (type) { case Common::PageType::Unmapped: { LOG_ERROR(HW_Memory, "Unmapped ReadBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})", @@ -277,10 +261,8 @@ struct Memory::Impl { break; } case Common::PageType::Memory: { - DEBUG_ASSERT(page_table.pointers[page_index]); - - const u8* const src_ptr = - page_table.pointers[page_index] + page_offset + (page_index << PAGE_BITS); + DEBUG_ASSERT(pointer); + const u8* const src_ptr = pointer + page_offset + (page_index << PAGE_BITS); std::memcpy(dest_buffer, src_ptr, copy_amount); break; } @@ -320,7 +302,8 @@ struct Memory::Impl { std::min(static_cast(PAGE_SIZE) - page_offset, remaining_size); const auto current_vaddr = static_cast((page_index << PAGE_BITS) + page_offset); - switch (page_table.attributes[page_index]) { + const auto [pointer, type] = page_table.pointers[page_index].PointerType(); + switch (type) { case Common::PageType::Unmapped: { LOG_ERROR(HW_Memory, "Unmapped WriteBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})", @@ -328,10 +311,8 @@ struct Memory::Impl { break; } case Common::PageType::Memory: { - DEBUG_ASSERT(page_table.pointers[page_index]); - - u8* const dest_ptr = - page_table.pointers[page_index] + page_offset + (page_index << PAGE_BITS); + DEBUG_ASSERT(pointer); + u8* const dest_ptr = pointer + page_offset + (page_index << PAGE_BITS); std::memcpy(dest_ptr, src_buffer, copy_amount); break; } @@ -364,7 +345,8 @@ struct Memory::Impl { std::min(static_cast(PAGE_SIZE) - page_offset, remaining_size); const auto current_vaddr = static_cast((page_index << PAGE_BITS) + page_offset); - switch (page_table.attributes[page_index]) { + const auto [pointer, type] = page_table.pointers[page_index].PointerType(); + switch (type) { case Common::PageType::Unmapped: { LOG_ERROR(HW_Memory, "Unmapped WriteBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})", @@ -372,10 +354,8 @@ struct Memory::Impl { break; } case Common::PageType::Memory: { - DEBUG_ASSERT(page_table.pointers[page_index]); - - u8* const dest_ptr = - page_table.pointers[page_index] + page_offset + (page_index << PAGE_BITS); + DEBUG_ASSERT(pointer); + u8* const dest_ptr = pointer + page_offset + (page_index << PAGE_BITS); std::memcpy(dest_ptr, src_buffer, copy_amount); break; } @@ -414,7 +394,8 @@ struct Memory::Impl { std::min(static_cast(PAGE_SIZE) - page_offset, remaining_size); const auto current_vaddr = static_cast((page_index << PAGE_BITS) + page_offset); - switch (page_table.attributes[page_index]) { + const auto [pointer, type] = page_table.pointers[page_index].PointerType(); + switch (type) { case Common::PageType::Unmapped: { LOG_ERROR(HW_Memory, "Unmapped ZeroBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})", @@ -422,10 +403,8 @@ struct Memory::Impl { break; } case Common::PageType::Memory: { - DEBUG_ASSERT(page_table.pointers[page_index]); - - u8* dest_ptr = - page_table.pointers[page_index] + page_offset + (page_index << PAGE_BITS); + DEBUG_ASSERT(pointer); + u8* const dest_ptr = pointer + page_offset + (page_index << PAGE_BITS); std::memset(dest_ptr, 0, copy_amount); break; } @@ -461,7 +440,8 @@ struct Memory::Impl { std::min(static_cast(PAGE_SIZE) - page_offset, remaining_size); const auto current_vaddr = static_cast((page_index << PAGE_BITS) + page_offset); - switch (page_table.attributes[page_index]) { + const auto [pointer, type] = page_table.pointers[page_index].PointerType(); + switch (type) { case Common::PageType::Unmapped: { LOG_ERROR(HW_Memory, "Unmapped CopyBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})", @@ -470,9 +450,8 @@ struct Memory::Impl { break; } case Common::PageType::Memory: { - DEBUG_ASSERT(page_table.pointers[page_index]); - const u8* src_ptr = - page_table.pointers[page_index] + page_offset + (page_index << PAGE_BITS); + DEBUG_ASSERT(pointer); + const u8* src_ptr = pointer + page_offset + (page_index << PAGE_BITS); WriteBlock(process, dest_addr, src_ptr, copy_amount); break; } @@ -498,34 +477,19 @@ struct Memory::Impl { return CopyBlock(*system.CurrentProcess(), dest_addr, src_addr, size); } - struct PageEntry { - u8* const pointer; - const Common::PageType attribute; - }; - - PageEntry SafePageEntry(std::size_t base) const { - std::lock_guard lock{rasterizer_cache_guard}; - return { - .pointer = current_page_table->pointers[base], - .attribute = current_page_table->attributes[base], - }; - } - void RasterizerMarkRegionCached(VAddr vaddr, u64 size, bool cached) { - std::lock_guard lock{rasterizer_cache_guard}; if (vaddr == 0) { return; } - // Iterate over a contiguous CPU address space, which corresponds to the specified GPU // address space, marking the region as un/cached. The region is marked un/cached at a // granularity of CPU pages, hence why we iterate on a CPU page basis (note: GPU page size // is different). This assumes the specified GPU address region is contiguous as well. - u64 num_pages = ((vaddr + size - 1) >> PAGE_BITS) - (vaddr >> PAGE_BITS) + 1; - for (unsigned i = 0; i < num_pages; ++i, vaddr += PAGE_SIZE) { - Common::PageType& page_type{current_page_table->attributes[vaddr >> PAGE_BITS]}; - + const u64 num_pages = ((vaddr + size - 1) >> PAGE_BITS) - (vaddr >> PAGE_BITS) + 1; + for (u64 i = 0; i < num_pages; ++i, vaddr += PAGE_SIZE) { + const Common::PageType page_type{ + current_page_table->pointers[vaddr >> PAGE_BITS].Type()}; if (cached) { // Switch page type to cached if now cached switch (page_type) { @@ -534,8 +498,8 @@ struct Memory::Impl { // space, for example, a system module need not have a VRAM mapping. break; case Common::PageType::Memory: - page_type = Common::PageType::RasterizerCachedMemory; - current_page_table->pointers[vaddr >> PAGE_BITS] = nullptr; + current_page_table->pointers[vaddr >> PAGE_BITS].Store( + nullptr, Common::PageType::RasterizerCachedMemory); break; case Common::PageType::RasterizerCachedMemory: // There can be more than one GPU region mapped per CPU region, so it's common @@ -556,16 +520,16 @@ struct Memory::Impl { // that this area is already unmarked as cached. break; case Common::PageType::RasterizerCachedMemory: { - u8* pointer{GetPointerFromRasterizerCachedMemory(vaddr & ~PAGE_MASK)}; + u8* const pointer{GetPointerFromRasterizerCachedMemory(vaddr & ~PAGE_MASK)}; if (pointer == nullptr) { // It's possible that this function has been called while updating the // pagetable after unmapping a VMA. In that case the underlying VMA will no // longer exist, and we should just leave the pagetable entry blank. - page_type = Common::PageType::Unmapped; + current_page_table->pointers[vaddr >> PAGE_BITS].Store( + nullptr, Common::PageType::Unmapped); } else { - current_page_table->pointers[vaddr >> PAGE_BITS] = - pointer - (vaddr & ~PAGE_MASK); - page_type = Common::PageType::Memory; + current_page_table->pointers[vaddr >> PAGE_BITS].Store( + pointer - (vaddr & ~PAGE_MASK), Common::PageType::Memory); } break; } @@ -595,7 +559,7 @@ struct Memory::Impl { auto& gpu = system.GPU(); for (u64 i = 0; i < size; i++) { const auto page = base + i; - if (page_table.attributes[page] == Common::PageType::RasterizerCachedMemory) { + if (page_table.pointers[page].Type() == Common::PageType::RasterizerCachedMemory) { gpu.FlushAndInvalidateRegion(page << PAGE_BITS, PAGE_SIZE); } } @@ -610,20 +574,18 @@ struct Memory::Impl { "Mapping memory page without a pointer @ {:016x}", base * PAGE_SIZE); while (base != end) { - page_table.attributes[base] = type; - page_table.pointers[base] = nullptr; + page_table.pointers[base].Store(nullptr, type); page_table.backing_addr[base] = 0; base += 1; } } else { while (base != end) { - page_table.pointers[base] = - system.DeviceMemory().GetPointer(target) - (base << PAGE_BITS); - page_table.attributes[base] = type; + page_table.pointers[base].Store( + system.DeviceMemory().GetPointer(target) - (base << PAGE_BITS), type); page_table.backing_addr[base] = target - (base << PAGE_BITS); - ASSERT_MSG(page_table.pointers[base], + ASSERT_MSG(page_table.pointers[base].Pointer(), "memory mapping base yield a nullptr within the table"); base += 1; @@ -646,21 +608,13 @@ struct Memory::Impl { template T Read(const VAddr vaddr) { // Avoid adding any extra logic to this fast-path block - if (const u8* const pointer = current_page_table->pointers[vaddr >> PAGE_BITS]) { + const uintptr_t raw_pointer = current_page_table->pointers[vaddr >> PAGE_BITS].Raw(); + if (const u8* const pointer = Common::PageTable::PageInfo::ExtractPointer(raw_pointer)) { T value; std::memcpy(&value, &pointer[vaddr], sizeof(T)); return value; } - - // Otherwise, we need to grab the page with a lock, in case it is currently being modified - const auto entry = SafePageEntry(vaddr >> PAGE_BITS); - if (entry.pointer) { - T value; - std::memcpy(&value, &entry.pointer[vaddr], sizeof(T)); - return value; - } - - switch (entry.attribute) { + switch (Common::PageTable::PageInfo::ExtractType(raw_pointer)) { case Common::PageType::Unmapped: LOG_ERROR(HW_Memory, "Unmapped Read{} @ 0x{:08X}", sizeof(T) * 8, vaddr); return 0; @@ -692,20 +646,12 @@ struct Memory::Impl { template void Write(const VAddr vaddr, const T data) { // Avoid adding any extra logic to this fast-path block - if (u8* const pointer = current_page_table->pointers[vaddr >> PAGE_BITS]) { + const uintptr_t raw_pointer = current_page_table->pointers[vaddr >> PAGE_BITS].Raw(); + if (u8* const pointer = Common::PageTable::PageInfo::ExtractPointer(raw_pointer)) { std::memcpy(&pointer[vaddr], &data, sizeof(T)); return; } - - // Otherwise, we need to grab the page with a lock, in case it is currently being modified - const auto entry = SafePageEntry(vaddr >> PAGE_BITS); - if (entry.pointer) { - // Memory was mapped, we are done - std::memcpy(&entry.pointer[vaddr], &data, sizeof(T)); - return; - } - - switch (entry.attribute) { + switch (Common::PageTable::PageInfo::ExtractType(raw_pointer)) { case Common::PageType::Unmapped: LOG_ERROR(HW_Memory, "Unmapped Write{} 0x{:08X} @ 0x{:016X}", sizeof(data) * 8, static_cast(data), vaddr); @@ -726,15 +672,13 @@ struct Memory::Impl { template bool WriteExclusive(const VAddr vaddr, const T data, const T expected) { - u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS]; - if (page_pointer != nullptr) { + const uintptr_t raw_pointer = current_page_table->pointers[vaddr >> PAGE_BITS].Raw(); + if (u8* const pointer = Common::PageTable::PageInfo::ExtractPointer(raw_pointer)) { // NOTE: Avoid adding any extra logic to this fast-path block - auto* pointer = reinterpret_cast(&page_pointer[vaddr]); - return Common::AtomicCompareAndSwap(pointer, data, expected); + const auto volatile_pointer = reinterpret_cast(&pointer[vaddr]); + return Common::AtomicCompareAndSwap(volatile_pointer, data, expected); } - - const Common::PageType type = current_page_table->attributes[vaddr >> PAGE_BITS]; - switch (type) { + switch (Common::PageTable::PageInfo::ExtractType(raw_pointer)) { case Common::PageType::Unmapped: LOG_ERROR(HW_Memory, "Unmapped Write{} 0x{:08X} @ 0x{:016X}", sizeof(data) * 8, static_cast(data), vaddr); @@ -755,15 +699,13 @@ struct Memory::Impl { } bool WriteExclusive128(const VAddr vaddr, const u128 data, const u128 expected) { - u8* const page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS]; - if (page_pointer != nullptr) { + const uintptr_t raw_pointer = current_page_table->pointers[vaddr >> PAGE_BITS].Raw(); + if (u8* const pointer = Common::PageTable::PageInfo::ExtractPointer(raw_pointer)) { // NOTE: Avoid adding any extra logic to this fast-path block - auto* pointer = reinterpret_cast(&page_pointer[vaddr]); - return Common::AtomicCompareAndSwap(pointer, data, expected); + const auto volatile_pointer = reinterpret_cast(&pointer[vaddr]); + return Common::AtomicCompareAndSwap(volatile_pointer, data, expected); } - - const Common::PageType type = current_page_table->attributes[vaddr >> PAGE_BITS]; - switch (type) { + switch (Common::PageTable::PageInfo::ExtractType(raw_pointer)) { case Common::PageType::Unmapped: LOG_ERROR(HW_Memory, "Unmapped Write{} 0x{:08X} @ 0x{:016X}{:016X}", sizeof(data) * 8, static_cast(data[1]), static_cast(data[0]), vaddr); @@ -783,7 +725,6 @@ struct Memory::Impl { return true; } - mutable std::mutex rasterizer_cache_guard; Common::PageTable* current_page_table = nullptr; Core::System& system; };